Grain-sieve cleaner.



PATBNTED AUG. 15, 1905.I

J, B. CORNWALL.. GRMN SIEVE GLEANER.

APPLIGATXOH FILED IAN. 8. 1904.

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W/T/VESSES- PATENTED AUG. l5, 1905.

.l J. B. GORNWALL. A GRAIN SIEVE CLEANER.

APPLIOATION FILED JAN. 3. 1004.

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B) MCX-@g UNITED sfra'rns PATENT OFFICE.

JOHN B. GORNWALL, OF MOLINE, ILLINOIS, ASSIGNOR TO THE BARNARD AND LIGASMANUFACTURING- GOMPANY, OF MOLINE, ILLINOIS.

GRAINHSIEVE CLEANER..

Specicaton of Letters Patent.

Patented Aug. 15, 1905.

Application iiled January 8. 1904. Serial No. 188,216.

To all who/r1. if; may concern:

Be it known that I, Jol-in' B. CoRNwALL, of Moline, in the county ofRock Island and State of Illinois, have invented certain new and usefulImprovements in Grain-Sieve Cleaners; and I hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, which form part of thisspecification.

This invention is an improved apparatus for cleaningl sieves,particularly applicable to the reciprocating sieves of grain cleaning orseparating machines; and its object is to provide a more efficient andpractically useful sievecleaning apparatus than those heretofore knownand to make such apparatus simple, light, and readily adjustable orattachable to machines now in use.

The invention comprises novel means for yieldinglysupporting the brushesor cleaners and novel means for reciprocating' or shifting the same, andI refer to the claims appended to the description of the apparatusillustrated in the accompanying drawings for summaries of the featuresof the invention for which protection is desired.

The drawings forming part of this` specification illustrate the bestform of the apparatus no-w known to me, and I will describe theinvention as illustrated therein.

Figure l is a longitudinal sectional elevation through part of agrain-separator, showing two sieves and my improved sieve-cleaningapparatus applied thereto. Fig. Qis a detail top plan view of thecleaning apparatus. Fig. 3 is a rear view thereof. Fig. 4 is a detail ofone of the rod-guides. Fig. 5 is an enlarged view of one of thecleaner-supports. Fig. 6 is an end view of Fig. 5, and Fig. 7 is adetail plan view showing a brush-cleaner in position beneatha perforatedscreen.

In the machine indicated in the drawings there are two sieves or screensA A, one above the other. These sieves are of ordinary construction andmay be either stationary or reciprocating, the construction and mode ofmounting' the sieves being immaterial and forming no part of the presentinvention.

Beneath the upper sieve A is a series of equidistanttransversely-disposed cleaners B, which may be of any suitable kind,such as strips of leather, rubber, bristles, or wire.

Brush-cleaners are shown in the drawings; but I do not restrict myselfthereto. The cleaners are provided with castings O, fastened to theirsides and provided with vertical apertures c for the reception ofsupportingstuds d, attached to collars D, strung on rods It, two or moreparallel rods E being arranged beneath the sieves and brushes andsupported in suitable guides at the ends of the screen. The collars Dmay be adjustably secured by tap-bolts D', and helical springs 0l arestrung on studs d between collars D and casting O, so as to yieldinglysupport the cleaners on rods E. Yieldingly supporting the cleanersbeneath the sieves I consider a valuable feature of my invention.

A sufIicient number of cleaners B are employed foreach screen to insureproper cleaning thereof, the number and distance apart of the cleanersdepending upon the size of the screen and the extent of lateral movementof the cleaners relative to the screen. The rods are supported at theirrear ends in guidesleeves F, which may behung in brackets F', attachedto an adjacent part of the machineframing. The forward ends of the rodsextend through guide-sleeves G, hung in brackets II, attached to anadjacent part of the framing. The forward ends of rods E are connectedby links al to crank-arms I on a transverse rock-shaft J, journaled inbrackets j', attached to the framing, and said rockshaft is oscillatedslowly by means of a crankarm J, connected by a pitman lf2 to a crankla" on a worm-gear t', journaled on a stub-shaft attached to a suitableportion of the frame and meshing' with a worm I( on a stub-shaft K',having a pulley K2, by which it can be belted to a driver. (Not shown.)I do not restrict myself to the specilic driving mechanism shown, butprefer the worm-drive for reciprocating the brushes, as it enables me toreduce the speed of reciprocation of the cleaners to the desired extentwithout using very large gears. Where a number of clean ers are mountedon the rods E, the latter can be stili"- ened by means of the truss-rodsc, attached to lugs cl2 on the end collars D and having intermediatestruts e, as shown.

Asimilar setof cleaning devices is arranged beneath the lower screen A',the rods E of the lower cleaners being connected to depending crank-armsI on shaft J, so that the upper and lower sets of cleaners move inopposite directions.

Operation: Motion being imparted to shaft K, worm-gear 70 through rod/Ji imparts a rocking motion to shaft J, and the latter, through arms I,imparts a reciprocating motion to rods E E, which move the cleaners Bback and forth under the sieves. The cleanersare thus moved a suitabledistance back and forth under the screen, so that the entire surface ofthe latter will be cleaned by the action ot' the several cleaners. Thesprings d hold the cleaners up against the sieve with uniform butyielding'pressure and permit them to pass under any obstacle which maycatch in or adhere to the under surface of the sieve, thus preventingthe cleaners tearing the sieve or being themselves injured.

lith some kinds of sieves or some classes of work it is best to usebristle-brushes; with others, to use wire brushes or leather or rubberstrips. All of these kinds of cleaners are well known, and therefore Ido not restrict myself to any one of them.

I do not claim, broadly, the use of reciprocating underrunning-cleaners;but

What I do claim as new, and desire to secure by Letters Patent thereon,is#

l. In combination, a sieve, a pair of longitudinally-arranged rodsthereunder, means for longitudinally reciprocating said rods slowlyindependently of the sieve; adjacent vertically-disposed studs attachedto the rods, transversely arranged vertically movable cleaners guided onsaid studs, and springs strung on the studs below the cleanersyieldingly pressing the cleaners upward into contact with the sieve,substantially as described.

2. In combination, a sieve, parallel rods thereunder, adjacent parallelupstanding studs fixed on said rods, transversely arranged cleaners,castings attached to said cleaners and loosely strung' on and guided bythe studs, and springs strung on the studs between the castings and rodsand pressing the cleaners yieldingl y against the sieve.

3. ln a sieve-cleaning' device, the combination of a sieve, parallelrods thereunder, collars afxed to said rods, vertical studs attached tosaid collars, movable cleaners loosely mounted on and guided by thestuds, and springs interposed between the cleaners and collars andholding the cleaners yieldingly against the sievefsubstantially asdescribed.

4. In a sieve-cleaning device, the combination of a sieve, parallelreciprocating rods thereunder, collars adjustably attached to said rods,vertical studs attached to said collars, screen-cleaners, guide-castingsattached to said cleaners and provided with apertures transtiXed by saidstuds to guide the cleaners, helical springs strung on the studs betweenthe castings and collars, and means for reciprocating the rods,substantially as and for the purpose described.

In testimony that I claim the foregoing as my own I afiX my signature inpresence of two witnesses.

JGHN B. CORNWALL. In presence of- STEPHEN D. RAY, HARRY R. JOSEPH.

